Finding the Fourth Proportional to 3,938,942.36, 5,435,582.34 and 2,220,418.76
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Solution
The fourth proportional to 3,938,942.36, 5,435,582.34 and 2,220,418.76 is: 3,064,088.76
Step by Step Solution
- Step 1: Write the proportion equation
3,938,942.36 : 5,435,582.34 = 2,220,418.76 : x - Step 2: Convert to fraction form
3,938,942.36/5,435,582.34 = 2,220,418.76/x - Step 3: Cross multiply
3,938,942.36x = 5,435,582.34 × 2,220,418.76 - Step 4: Simplify right side
3,938,942.36x = 12,069,268,999,260.70 - Step 5: Solve for x
x = 12,069,268,999,260.70/3,938,942.36 - Step 6: Final answer
x = 3,064,088.76
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.